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2 cards from this section. Quick, good the night before a test.
What is the definition of wavelength?
Think of where crests or troughs are found.
What does the angular wave number (k) represent?
Refer to how much the wave changes with distance.
What is the wavelength of a wave?
Remember the crests or troughs seen in a wave.
The angular wave number k is defined as:
Think of k as it relates to both phase and distance.
A wave on a string is represented by the function y(x, t) = 0.05 sin(4x - 8t). What are the wavelength and the speed of the wave?
Use the formulas for wavelength and wave speed.
Consider a sound wave in air characterized by a frequency of 500 Hz. Calculate the wavelength if the speed of sound at that temperature is 340 m/s.
Remember the fundamental wave equation!
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